During the investigation of wild plants in Jinyun Mt., Beibei, Chongqing, we discovered a plant of Urticaceae on valley by stream at an altitude 500-800 m. Although pistillate inflorescences of this species have receptacle, it is more consistent with the characteristics of Pellionia due to the 5 tepals on apex with hornlike projections and achenes tuberculate. Moreover, combined with molecular phylogenetic evidence, this species is obviously belonging to Pellionia. This species is characterized by its pistillate inflorescences with receptacles and involucres, and by this one character it can be placed within Sect. Elatostematopsis W.T.Wang. This species is similar to P. cephaloidea W.T.Wang, but differing from the latter in its herbs, penninerved leaves, secondary nerves 2-3 at leaf narrow side and 3-4 at broad side, 2 outer bracts, glabrous, abaxially 1greencarinate, 8-12 inner bracts, glabrous, abaxially 1greencarinate, tepals on apex with hornlike projections, achenes oblong, tuberculate. Based on the morphological and molecular phylogenetic evidence, we described it as a new species of Pellionia, named Pellionia jinyunensis C. Xiong, F. Chen & H. P. Deng.